Here is mine:
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I try not to drive faster than 60 miles per hour for a few reasons. I have my two toddlers in the back seats that I have to stop after a while and change diapers. So I do not drive faster than that for the sake of better control of the truck (especially when wind is dramatically involved) and to help my gas last just a little bit longer on distance and time. I have done enough of these trips with the family to know that I can last about 100 miles on one full tank of gas before I have to start planning out where I can safely and easily fill up again (and change diapers). Usually that is as much time that I have for a quiet ride with the toddlers napping - anything longer and it becomes a bit complicated getting them to cooperate on a trip. So we try not to go too far and besides it gives me the excuse to to it more often with closer trips so that I gain more experience each time.
Also, I know the truck looks like it is squatting on the pic but that is because the front wheels are sitting on concrete and the back are still sitting on the dirt site of that camp ground. I have a WDH that helps the truck greatly (I initially drove without one on my first and can attest to how vastly different the experience is). This trailer is also on the heavy side of what I see most people comment on this site - it weights near 5000lbs dry. And the truck behaves brilliantly and adding to my speed comment - I never ask my truck to do ridiculous things when towing. Not so much because of the truck or trailer but because my family is much more important and I want us to get there safe.